What does SAP stands for â SAP stands for Systems, Applications and Products in data processing. 1  SAP is the fourth largest software company in the world. 2  The SAP R/3 system is a business software package designed to integrate all areas of a business.
Most of this emitted radiation is at longer wavelengths than solar radiation. Unlike solar radiation, which is mostly at wavelengths visible to the human eye, the Earth's longwave radiation is mostly at infrared wavelengths, which are invisible to the human eye.
The higher their temperature, the more radiation they emit. The Earth emits radiation to space. This radiation emitted by all objects, sometimes called thermal radiation, has a characteristic wavelength that depends on the temperature. At the temperature of the Earth surface, thermal radiation is at infrared wavelengths, about 10 microns. The human eye cannot detect this radiation. As the temperature of an object increases, the wavelength of the emitted radiation shortens. If you heat a piece of iron or coal, it starts glowing with a red color.